*{
	margin: 0;
	padding: 0;
}
ul{
	list-style: none;
}
img{
	cursor: pointer;
}
.banner{
	width: 300px;
	height: 300px;
	margin: 0 auto;
	overflow: hidden;

}

.banner ul li{

	width: 300px;
	height: 300px;
}
.banner ul li + li{
	display: none;
	width: 300px;
	height: 300px;

}
.banner ul li img{
	width: 100%;
	height: 100%;
	
}